A Newport SummerNewport, Rhode Island, is one of the last bastions of American high society. The grand Gilded Age houses that top its oceanside cliffs and line storied Bellevue Avenue are largely untouched by contemporary renovation and taste, and family heirlooms are passed down from generation to generation with Yankee thrift. Indeed, Newport has an understated elegance that sets it apart from other resort towns. Life behind the facades of these elaborate mansions